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Background and Objectives To assess whether medically supportive care partners modify the associations of symptomatic chronic conditions with the number of functional disabilities in a cohort of multimorbid older adults with cognitive impairment. Research Design and Methods The research design is a prospective study of a nationally representative cohort of Medicare beneficiaries. National Health and Aging Trends Study (NHATS) data were linked with Medicare claims for years 2011–2015. Participants were aged 65 or older and had cognitive impairment with at least 2 chronic conditions (N = 1,003). Annual in-person interviews obtained sociodemographic information at baseline and time-varying variables for caregiving, hospitalization, and 6 activities of daily living (ADL); these variables were merged with Center for Medicare and Medicaid Services data to ascertain 16 time-varying chronic conditions. A care partner was defined as a person who sat with their care recipient during doctor visits in the past year and/or who helped them with prescribed medications in the last month. Chronic condition associations and their potential effect modifications by care partner status were assessed using weighted generalized estimating equations accounting for the complex survey design of the longitudinal analytical sample. Results Chronic kidney disease, depression, and heart failure were associated with an increased number of functional disabilities. Among these, only the association of chronic kidney disease with the number of functional disabilities (interaction p value = .001) was weakened by the presence of a care partner. Discussion and Implications The presence of care partners showed limited modification of the associations of symptomatic chronic conditions with functional disability.

Chronic Conditions, Medically Supportive Care Partners, And Functional Disability Among Cognitively Impaired Adults